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Magnetic rollerMagnetic roller description/claimsThe Patent Description & Claims data below is from USPTO Patent Application 20080254943, Magnetic roller. Brief Patent Description - Full Patent Description - Patent Application Claims
CROSS-REFERENCE TO RELATED U.S. APPLICATIONS
Not applicable. STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENTNot applicable. NAMES OF PARTIES TO A JOINT RESEARCH AGREEMENTNot applicable. REFERENCE TO AN APPENDIX SUBMITTED ON COMPACT DISCNot applicable. BACKGROUND OF THE INVENTION1. Field of the Invention The present invention relates generally to a magnetic roller, and more particularly to an innovative magnetic roller with pull rope braking members. 2. Description of Related Art Including Information Disclosed Under 37 CFR 1.97 and 37 CFR 1.98. A magnetic roller refers to a damping device used in fitness equipment, for example, an oval track stepper is equipped with a magnetic roller for regulating resistance. FIG. 1 depicts the structure of a typical magnetic roller, which generally comprises a freewheel 10, arc magnetic disks 11, restoring springs 12, a control rope 13 and a brake 14. Two sets of arc magnetic disks 11 are assembled symmetrically in a rotating state. The exterior of two arc magnetic disks 11 is spaced from the interior magnetic surface 101 of freewheel 10. The swinging ends 110 of two arc magnetic disks 11 are linked by a control rope 13, the middle section of which is assembled on said brake 14. Two sections of the control rope 13 pass over an axis 15 to form a “L”-shaped path. The brake 14 may slide vertically (e.g. driven by the pull rope). When the brake 14 slides upwards, it is supported by the axis 15, so that two sections of the control rope 13 are pulled inwards, and the swinging end 110 of two arc magnetic disks 11 are driven to swing inwards, allowing to adjust the spacing between the exterior of two arc magnetic disks 11 and the magnetic surface 101 of freewheel 10 (the strength of magnetic resistance). The following disadvantages are found from this structure during applications. The two sections of the control rope 13 are designed to pass over axis 15 along a “L”-shaped path, but the control rope 13 is generally made of a steel rope with stronger strength and inflexibility. During the shift process of control rope 13, unsmooth behavior may likely occur, leading to poorer operational accuracy, sensitivity and performance. Thus, to overcome the aforementioned problems of the prior art, it would be an advancement in the art to provide an improved structure that can significantly improve efficacy. To this end, the inventor has provided the present invention of practicability after deliberate design and evaluation based on years of experience in the production, development and design of related products. BRIEF SUMMARY OF THE INVENTIONThere is enhanced efficacy by the present invention. First, the first and second pull ropes 41, 42 are pulled linearly, without the turning portions of typical structure. So, the pull rope operates more smoothly and accurately with improved performance and applicability. Second, as the gear tooth 53,54 is engaged, the left and right drive gears 51, 52 may rotate in opposite directions, thus ensuring balanced drive with better performance. The improvements are brought about by this invention. First, the bearing 24 for central axis 21 is an axially located bearing in the middle position. Since the bearing 24 is placed nearby the pull rope brake set 50 moving frequently under the pulling force of the brake rope 70, it is possible to provide a balanced stress, prolonging the service life of components and reducing the operating noise. Second, based upon the structure of the assembly ends 31 of left and right swinging magnetic disks 30, 30B, the assembly ends 31 are installed onto the same pin joint portion 29 of the main disk 20, the left and right swinging magnetic disks 30, 30B being supported by a single pivot point, thus making it possible to operate more smoothly in a balanced state. Although the invention has been explained in relation to its preferred embodiment, it is to be understood that many other possible modifications and variations can be made without departing from the spirit and scope of the invention as hereinafter claimed. Continue reading about Magnetic roller... Full patent description for Magnetic roller Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this Magnetic roller patent application. ###  How KEYWORD MONITOR works... a FREE service from FreshPatents1. Sign up (takes 30 seconds). 2. Fill in the keywords to be monitored. 3. Each week you receive an email with patent applications related to your keywords. Start now! - Receive info on patent apps like Magnetic roller or other areas of interest. ### Previous Patent Application: Clutch controller, method for controlling clutch, and straddle-type vehicle Next Patent Application: Electronic device and method for reproducing a human perceptual signal Industry Class: Exercise devices ### FreshPatents.com Support Thank you for viewing the Magnetic roller patent info. IP-related news and info Results in 0.08345 seconds Other interesting Feshpatents.com categories: Qualcomm , Schering-Plough , Schlumberger , Seagate , Siemens , Texas Instruments , 174 |
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